mirror of
https://git.lyx.org/repos/lyx.git
synced 2024-12-17 02:05:48 +00:00
e2bc7ffae3
RefChanger temporarily assigns a value to a non-const reference of any
kind. RefChanger provides a flexible and uniform generalisation of the various
scope guards previously derived from the old Changer class in MetricsInfo.h.
As before, a temporary assignment lasts as long as the Changer object lives. But
the new Changer is movable. In particular, contorsions are no longer needed to
change a private field. Special code can be moved into the appropriate classes,
and it is no longer necessary to create a new class for each specific use.
Syntax change:
FontSetChanger dummy(mi.base, value);
-> Changer dummy = mi.base.changeFontSet(value);
New function for generating arbitrary Changers:
Changer dummy = make_change(ref, val, condition);
Bugfix:
* Fix the display of \displaystyle{\substack{\frac{xyz}{}}} (missing style
change).
162 lines
2.8 KiB
C++
162 lines
2.8 KiB
C++
/**
|
|
* \file InsetMathSpecialChar.cpp
|
|
* This file is part of LyX, the document processor.
|
|
* Licence details can be found in the file COPYING.
|
|
*
|
|
* \author Enrico Forestieri
|
|
*
|
|
* Full author contact details are available in file CREDITS.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include "InsetMathSpecialChar.h"
|
|
|
|
#include "MathSupport.h"
|
|
#include "MathStream.h"
|
|
#include "MetricsInfo.h"
|
|
|
|
#include "Dimension.h"
|
|
#include "LaTeXFeatures.h"
|
|
#include "TextPainter.h"
|
|
|
|
#include "frontends/FontMetrics.h"
|
|
#include "frontends/Painter.h"
|
|
|
|
#include "support/lassert.h"
|
|
|
|
|
|
namespace lyx {
|
|
|
|
|
|
InsetMathSpecialChar::InsetMathSpecialChar(docstring const & name)
|
|
: name_(name), kerning_(0)
|
|
{
|
|
if (name.size() != 1) {
|
|
if (name == "textasciicircum" || name == "mathcircumflex")
|
|
char_ = '^';
|
|
else if (name == "textasciitilde")
|
|
char_ = '~';
|
|
else if (name == "textbackslash")
|
|
char_ = '\\';
|
|
else
|
|
LASSERT(false, char_ = '?');
|
|
} else
|
|
char_ = name.at(0);
|
|
}
|
|
|
|
|
|
|
|
Inset * InsetMathSpecialChar::clone() const
|
|
{
|
|
return new InsetMathSpecialChar(*this);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::metrics(MetricsInfo & mi, Dimension & dim) const
|
|
{
|
|
if (mi.base.fontname == "mathnormal") {
|
|
Changer dummy = mi.base.font.changeShape(UP_SHAPE);;
|
|
dim = theFontMetrics(mi.base.font).dimension(char_);
|
|
} else {
|
|
frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
|
|
dim = fm.dimension(char_);
|
|
kerning_ = fm.rbearing(char_) - dim.wid;
|
|
}
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::draw(PainterInfo & pi, int x, int y) const
|
|
{
|
|
if (pi.base.fontname == "mathnormal") {
|
|
Changer dummy = pi.base.font.changeShape(UP_SHAPE);
|
|
pi.draw(x, y, char_);
|
|
} else {
|
|
pi.draw(x, y, char_);
|
|
}
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::metricsT(TextMetricsInfo const &, Dimension & dim) const
|
|
{
|
|
dim.wid = 1;
|
|
dim.asc = 1;
|
|
dim.des = 0;
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::drawT(TextPainter & pain, int x, int y) const
|
|
{
|
|
pain.draw(x, y, char_);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::write(WriteStream & os) const
|
|
{
|
|
os << '\\' << name_;
|
|
if (name_.size() != 1)
|
|
os.pendingSpace(true);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::validate(LaTeXFeatures & features) const
|
|
{
|
|
if (name_ == "mathcircumflex")
|
|
features.require("mathcircumflex");
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::normalize(NormalStream & os) const
|
|
{
|
|
os << "[char ";
|
|
os.os().put(char_);
|
|
os << " mathalpha]";
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::maple(MapleStream & os) const
|
|
{
|
|
os.os().put(char_);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::mathematica(MathematicaStream & os) const
|
|
{
|
|
os.os().put(char_);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::octave(OctaveStream & os) const
|
|
{
|
|
os.os().put(char_);
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::mathmlize(MathStream & ms) const
|
|
{
|
|
switch (char_) {
|
|
case '&':
|
|
ms << "&";
|
|
break;
|
|
default:
|
|
ms.os().put(char_);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
void InsetMathSpecialChar::htmlize(HtmlStream & ms) const
|
|
{
|
|
switch (char_) {
|
|
case '&':
|
|
ms << "&";
|
|
break;
|
|
default:
|
|
ms.os().put(char_);
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
} // namespace lyx
|